Quick guide:

• What’s happening with the baby at 40 weeks pregnant?

• How big is your baby at 40 weeks pregnant?

• How is your belly at 40 weeks pregnant?

• Common symptoms and how to manage them?

• Frequently asked questions at 40 weeks pregnant

What’s happening with the baby at 40 weeks pregnant?

Skin and color

At birth, your baby’s skin will have a reddish-purple tone due to visible blood vessels, which will change to pinkish-red within a day or two. Their hands and feet may appear bluish for a few days until their circulation fully matures. Babies with darker skin tones will develop more pigmentation over the first few months.

Head and soft spots

Your baby’s skull remains soft and flexible with fontanels (soft spots) to help them pass through the birth canal during delivery. These soft spots will gradually close during their first year of life.

Reflexes

Your baby’s reflexes are strong and ready for life outside the womb. They can grip your finger, root for food, and have a strong sucking reflex to feed.

Hair and nails

Your baby’s nails are fully grown and may extend beyond their fingertips, while their hair may vary from thick locks to just a fine fuzz.

How big is your baby at 40 weeks pregnant?

At 40 weeks pregnant, your baby is about the size of a small pumpkin, measuring approximately 51 cm long from head to toe and weighing around 3.62 kg. These are averages, so your baby might be slightly smaller or larger depending on individual factors. They’re fully grown and ready to meet you very soon!

How is your belly at 40 weeks pregnant?

At 40 weeks pregnant, your belly is at its largest and most prominent as you carry your full-term baby. 

Size and shape

• Your belly is likely round, heavy, and stretched to its limit as it accommodates your baby, placenta, and amniotic fluid.

• If your baby has dropped lower into your pelvis (lightening), your belly may appear slightly lower than in previous weeks. This can relieve pressure on your lungs but increase pressure on your bladder and pelvis.

Sensations

• Braxton Hicks contractions: These practice contractions may feel more frequent or intense as your body prepares for labor.

• Pressure and pain: You may experience increased pelvic pressure, lower back pain, or sharp jabs (lightning crotch) as your baby’s head presses on nerves and your cervix.

Skin and changes

• Stretch marks might be more noticeable due to the stretching of your belly.

• Your belly may feel tight, itchy, or sensitive, so moisturizing regularly can help soothe the discomfort.

Common symptoms and how to manage them?

1) Braxton Hicks contractions

At 40 weeks, these “practice contractions” may become more intense and frequent as your body gears up for labor.

How to manage: Rest, stay hydrated, and try changing positions. If contractions become regular, stronger, and closer together, they may signal true labor – contact your provider.

2) Pelvic pain and pressure

Your baby dropping lower into your pelvis (lightening) can cause increased pressure and discomfort in your hips, groin, and pelvic floor.

How to manage: Use a pregnancy support belt, rest with your feet elevated, and try gentle stretches or a warm bath to ease the discomfort.

3) Back pain

The weight of your baby and the loosening of your joints can strain your lower back, causing pain.

How to manage: Practice good posture, use a warm compress, or try prenatal yoga or massage for relief. Swimming or floating in water can also ease the strain.

4) Insomnia

Anxiety about labor, frequent trips to the bathroom, or discomfort may make sleep difficult.

How to manage: Use pillows to support your belly and hips, maintain a relaxing bedtime routine, and take short naps during the day if needed.

5) Leaking fluid

If your water breaks, you may notice a gush or a slow trickle of amniotic fluid.

How to manage: Call your provider immediately if you suspect your water has broken, as this typically means labor will begin soon.

6) Changes in vaginal discharge

You may see increased discharge, including mucus or bloody show, as your cervix thins and dilates.

How to manage: Wear panty liners for comfort. Contact your provider if you experience heavy bleeding or foul-smelling discharge.

7) Mood swings

Hormonal fluctuations, discomfort, and anticipation can lead to heightened emotions.

How to manage: Practice self-care, talk to loved ones, and take time to relax. If you feel persistently down or overwhelmed, reach out to your healthcare provider.

8) Swelling

Mild swelling in your feet and ankles is common, but sudden or severe swelling in your hands, face, or legs could indicate a problem like preeclampsia.

How to manage: Elevate your feet, stay hydrated, and avoid sitting or standing for long periods. Report any concerning swelling to your provider.

9) Heartburn

Your baby pressing on your stomach can worsen heartburn.

How to manage: Eat smaller, frequent meals, avoid spicy or fatty foods, and sleep with your head elevated. Your provider can recommend safe antacids if needed.

Frequently asked questions at 40 weeks pregnant

Is it normal to still be pregnant at 40 weeks?

Yes, it’s completely normal. Many first-time moms or those with longer cycles go past their due date. Pregnancy is considered full term between 39 and 42 weeks, so your baby may still arrive within this timeframe.

How will I know if I’m in labor?

True labor contractions are regular, grow stronger and closer together, and don’t stop with rest or hydration. You may also notice your water breaking or a “bloody show” (pink or blood-tinged mucus). If you’re unsure, call your provider.

What happens if my water breaks?

If your water breaks, call your provider immediately. Labor usually starts within 24 hours. If contractions don’t begin naturally, your provider may induce labor to reduce the risk of infection.

Why do I feel so much pelvic pressure?

As your baby drops lower into your pelvis, it increases pressure on your hips, groin, and pelvic floor, which is a sign that labor may be near.

Can I try natural ways to induce labor?

While many natural methods aren’t proven, gentle activities like walking or having sex may help. Always check with your provider before trying anything to ensure it’s safe for you and your baby.

Should I still feel baby movements?

Yes, your baby should remain active even in the final days of pregnancy. If you notice a decrease in movement (fewer than 10 movements in two hours), contact your provider immediately.

What if I go past 40 weeks?

Your provider will monitor your baby closely with tests like a non-stress test or ultrasound to ensure everything is fine. Many providers will discuss induction if you go beyond 41 or 42 weeks.

What does it mean if I lose my mucus plug?

Losing your mucus plug is a sign that your cervix is softening and dilating in preparation for labor. However, it doesn’t necessarily mean labor is imminent – it could still be days or weeks away.

How can I relieve back pain at this stage?

Back pain is common at 40 weeks. Gentle exercises, a warm compress, prenatal massage, and using a support belt can help. If the pain suddenly worsens, it could indicate back labor, so contact your provider.